Finding the Fourth Proportional to 639,425.76, 882,390.84 and 352,939.68
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Solution
The fourth proportional to 639,425.76, 882,390.84 and 352,939.68 is: 487,047.54
Step by Step Solution
- Step 1: Write the proportion equation
639,425.76 : 882,390.84 = 352,939.68 : x - Step 2: Convert to fraction form
639,425.76/882,390.84 = 352,939.68/x - Step 3: Cross multiply
639,425.76x = 882,390.84 × 352,939.68 - Step 4: Simplify right side
639,425.76x = 311,430,740,704.53 - Step 5: Solve for x
x = 311,430,740,704.53/639,425.76 - Step 6: Final answer
x = 487,047.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.